William e



(No Model.) l A W.A Pm MIGHBNBR.

' `Strealcn Boiler.

No.'242,787. Patented June 14, |1881;

WTA/5555.-

i UNITED STATES 4PATENT OFFICE.

WILLIAM PJ. MICHENEE, on oswEGo, NEW YoEx.

STEAM- SPECIFICATION forming' part of Letters Patent No. 242,787, dated June Application filed March 14,1881. (No model.)

To all whom it may concern:

Be it known that I, WILLIAM R.4 MICHENER, of Oswego, in the county ot'Oswego, in the State of New York, have invented new and useful Improvements in Steam-Boilers, ot' which the following, taken in connection with the accompanying drawings, is a full, clear, and exact description.

This invention consists incertain peculiar means oi' connecting to a steam-boiler watertubes placedacross a large main lire-Hue extended through the boiler, whereby a perfect circulation of the water in the boileris obtained, and the said water-tubes are rendered easy of access for cleaning and repairs.

Theinvention also consists in an improved construction of a water-back and means o f detachably connecting the same tothe end of the boiler.

It also consists in an improved arrangement of the steam and water pipes extended 'from the aforesaid water-back to the boiler; and it furthermore consists in a novel arrangement, with a" dome devoid of direct communication with the interior of the boiler, of a perforated dry-pipe extended the length of the boiler, near the crown thereof, and having a branch pipe extended into the dome and terminating with an open end in the vicinity of the crown thereof, a deflector arranged over the end of said branch pipe, and the steam-pipe tapping the dome directly over the deliector, all as hereinafter more fully set forth and described.

In the accompanying drawings, Figure 1 is a vertical-longitudinal section of my improved steam-boiler; Fig. 2, a transverse section on line :c w of Fig. l; Fig. 3, atop viewwith a portion ot' the shell broken away to illustrate the connection of the water-space back with the end of the boiler; and Fig. 4 is a rear-end view.

Similar letters ot' reference indicate corresponding parts.

A denotes the boiler, longitudinally through Ithe water-space of which is extended a large main fire-flue, B, the bottom of which is sufficiently raised above the bottom of the boiler to allow the water to pass between them. At the front end .an opening is made through the bottom of the flue B and boiler A for the reception of the re-grate N.

G C are water tubes or drums, arranged vertically in the tire-liuc B and communicating BolLER.

with the water-space ofthe boiler at the top of the tlue B, to which they are detachably connected by a pipe, d, screwed into the shell of said Hue. The lower end ot' the drums O is provided with a pipe, a, which passes thron gh a steam-tight thimble, fr, extended through the water-space between the bottoms of the line B and boiler-shell A. At the exterior of the latter the pipe a is provided with a coupling, b, to which is detachably connected a return-pipe, c', the opposite end of which taps the bottom ot' the boiler A, thus obtaining a circulation of the water from the lowest point of the boiler through the drums to the uppermost part of the water-space of the boiler. The heatof the drums C, which are directly impinged by the products of combustion passing through the `fire-tine B, produces an ascending motion of the water in said drums, and the consequent draft of water from the bottom of the boiler causes a downward circulation at the sides of the boiler. By the detachable connection ot' the drums C with the tire-flue B and boiler A said drums are rendered easy of access for cleaning and repairs. Y.

The rear end of the boiler A has an extension, D, into the end of which is tted a separate hollow back, E, which is constructed of two circular plates riveted to a double-lian ged annular rim interposed between said plates. Said hollow or water back is inserted in the extension D of the boiler-shell, and detachably connected thereto by acircnlar band of angleiron, f, encompassing theexteriorfof the extension D and back E at .their adjoining edges and bolted thereto, as shown in Fig.. 1 of the drawings. rllhe water-back E is without communication with the interior ot the boiler A, except by a water-pipe, F, and steamfpipe F',

which tap the rear of the back E respectively at about the center of its height, and ata point relatively higher than the water-line of the boiler. Said pipes F andF are each provided with a coupling, e, to which is detachably connected a pipe, p, which passes through a thim- Able, l, extended through the back E, and thence through the combustion-chamber L, between the end of the boiler A and head E, and taps the end ot' the boiler proper, as best seen in Fig. 3 of the drawings.

G represents the feed-water pipe, .which is connected, to the back E, so that instead of IOO forcing the feed-Water directly into theboiler it is intercepted by the aforesaid back. This detention of the feed-water allows the impurities thereof to precipitate to the bottom of the back E, the pure upper stratum of said water being conveyed to the boiler by the pipe F, before described. The back E is thus made to serve as a mud-drum for collecting the sediment of the feed-water, said sediment being removed,when required, by a blow-off cock,M, attached to the bottom of the back.

h represents a perforated pipe extended lengthwise the boiler, in the vicinity of the water-line thereof. One or both ends of said pipe protrude through the end of the boiler, and are provided at the exterior thereof with a blow-off cock, o, as shown in Fig. 3 ofthe drawings. By" opening the cock o the pressure of the steam forces the scum from the surface of the water into the pipe h through the perforations thereof, and-thence out through the blowoff cock` In order to render the aforesaid ef- Afeet uniform throughout the length of the boiler I graduate the perforations increasingly, either in number or size, from the dischargeend of the pipe h to the opposite end thereof.

H represents a dome in the form of a steamtight chamber, built upon the shell of the boiler A, and deprived of direct communication with the boiler by the extension of the boiler-shell across the bottom of the dome. Along the crown of the boiler is arranged a dry-pipe, P, which is perforated ontop, and has a vertical branch pipe, P', passing through the shell of the boiler and terminating with an open end in the dome H, thus conveying the steam, which naturally is dryest at the crown of the boiler, into the steam-tight chamber H, from whence it is taken to the engine by a steampipe, K, extended from the top of the dome, as shown in Figs. l and 2 of the drawings. Such steam as may become condensed in the dome His drawn oi` by a suitable outlet, c, at the base of the dome.

I represen ts a diaphragm or detlector placed over the end of the dry-pipe P', or interposed between thel same and the inlet to the steampipe K, for the purpose of deiecting the current of the steam, and thereby precipitating the moisture accompanying the steam issuing from the dry-pipe.

Having described my invention,what I claim as new, and desire to secure by Letters Patent, 1s-

1. In combination with the boiler A, fireue B, extended through said boiler, and having the water-space thereof extending around its bottom, and the drums or tubes C arranged across the iiue B, the pipe a, extended through the bottom of the shells of both the tire-Hue and boiler, and the return-pipe a', detachably connected to the protruding cud of the pipe aand tapping the bottom of the boiler, substantially as described and shown.

2. The combination of the boiler-shell having the extension D, the Water-back E, fitted to the interior of said extension and constructed of two circular plates riveted to a doubleflanged annular rim interposed between said plates, and the circular band of angle-iron, f, encompassing said extension and water-back at their adjoining edges, and detachably connected thereto, substantially in the manner described and shown.

3. The combination and arrangement, with the boiler having the extension D, and the water-back E, detachably connected thereto, of the pipes F F', extended from the rear of the water-back and returned through the same and through the smoke-box, and tapping the rear end ofthe boiler, substantially as described and shown. 4

4. The combination, with the boiler A, of the dome H, separa ted from the interior of the boiler by the extension of the boiler-shell across the bottom of the dome, the dry-pipe P, extended lengthwise the boiler and provided with steam-inlets throughout its length, the branch-pipe P', extended from the dry-pipe into the dome and terminating with an open end near the crown thereof, the defiecting-plate I, arranged over the end ot' the pipe P', and the steam-pipe K, tapping the dome directly over the detlector, all combined and arranged substantially in the manner described and f shown.

In testimony` whereof [have signed my name and atxed my seal, in the presence of two attesting witnesses, at Oswego, in the county of Oswego, in the State of New York, this 9th day ot" March, 1881.

WILLIAM R. llIICl-IENER. lL. s]

Witnesses:

L. AMES, J. H. FoRsYTH.

IOO 

